HW-33 (25 points) Superheated steam at an absolute pressure of 20 MPa and a temperature of...
Superheated steam at 20 MPa, 560oC enters the turbine of a vapor power plant. The pressure at the exit of the turbine is 0.7 bar, and liquid leaves the condenser at 0.4 bar at 75oC. The pressure is increased to 20.1 MPa across the pump and the specific enthalpy is 338.14 kJ/kg. The turbine isentropic efficiency is 81%. Cooling water enters the condenser at 20oC with a mass flow rate of 70.7 kg/s and exits the condenser at 38oC. For...
1. Steam is the working fluid in the (less than ideal) Ranking vapor power cycle with superheat, shown in the figure with the operational data. Boiler Turbine i W 2 T2 = 560°C Ts=38°C 20 MP2 Cooling water Condenser out Pump Ts = 20°C mew = 70.7 kg's Р x h s (kJ/kg.K) (kJ/kg) 338.14 State TCI 20.1 MPa 560 20 MPa 0.5 bar 0.4 bar 2442.3 0 a. Identify states 1 through 4 on the power plant schematic. b....
(8.2 information) Water is the working fluid in an ideal Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 480 degrees Celsius. The condenser pressure is 8kPa. The net power output of the cycle is 100 MW.(8.11) Reconsider the analysis of Problem 8.2, but include the analysis that the turbine and pump have isentropic efficiencies of 85 and 70%, respectively. Determinefor the modified cycle(a) the thermal efficiency.(b) the mass flow rate of steam, in kg/h, for a net power...
Water is the working fluid in a Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 700°C and the turbine exit pressure is 8 kPa. Saturated liquid enters the pump at 8 kPa. The heat transfer rate to the working fluid in the steam generator is 24 MW. The isentropic turbine efficiency is 88%, and the isentropic pump efficiency is 82%. Cooling water enters the condenser at 18°C and exits at 36°C with no significant change in pressure. Determine...
Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and temperature 600oC is fed to a turbine. Exhaust from the turbine enters a condenser at 100 kPa, where it is condensed to saturated liquid, which is then pumped to the boiler. (a) (20 pts.) What is the thermal efficiency η of an ideal Rankine cycle operating at these conditions? (b) (5 pts.) If the net power production of the cycle is 80,000 kW, what is...
Tutorial Questions 1 1. Water is the working fluid in an ideal Rankine cycle. The condenser pressure is 6 kPa, and saturated vapor enters the turbine at 10 MPa. Determine the heat transfer rates, in kJ per kg of steam flowing, for the working fluid passing through the boiler and condenser and calculate the thermal efficiency. 2. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is...
P8-29 A closed feedwater heater is used in a Rankine cycle Steam leaves the boiler at 20 MPa, 600°C. Between the high and low-pressure turbines, steam at 1 MPa is extracted and delivered to the closed feedwater heater. Feedwater exits the feedwater heater at 20 MPa and the saturation temperature of the 1-MPa steam; saturated liquid condensate is fed through a steam trap back to the condenser. Steam from the second- stage turbine enters the condenser at 10 kPa, and...
Problem 8.015 Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100℉ Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 Ibf/in.2 and 1000 , respectively. Both the turbine and pump have isentropic efficiencies of 95%. Pressure at the condenser inlet is 2 lbf/ in.2, but due to frictional effects the condensate...
Water is the working fluid in an ideal regenerative Rankine cycle with one open feed water heater, Figure 2. Upstream of the high pressure turbine superheated vapour with a mass flow rate of 90 kg/s entres the first-stage turbine at a pressure of 14 MPa Each turbine stage has an isentropic efficiency of 90%. The temperature of the inlet vapour is 520°C. The steam expands through the first-stage turbine to a pressure of 0.9MPa where some of the steam is...
Water is the working fluid Water is the working fluid in a Rankine cycle with reheat. Superheated steam leaves the boiler at 8 MPa and 480 °C. The steam expandsthrough the high pressure (firststage) turbine to 1 MPa and is then reheated to 440 °C. A saturated liquid exits the condenser at 6kPa. The isentropic efficiencies ofthe high- and low-pressure turbines are 83% and 85%, respectively. The isentropic efficiency of the pump is 87%. Manually calculate the:a. Heat added in...